Teachers are using apps in class, raising privacy issues for kids and parents. Classroom management app ClassDojo has been thrust to the front of an conversation about student data and privacy stretching far beyond little monster avatars. On this week's episode, we talk with Sam Chaudhary, co-founder of ClassDojo, Jim Steyer, CEO of Common Sense Media, and a community of parents and teachers about the obligations — legal and otherwise — techies have to today's kids.